- Telescope was invented in 17th century.
Kính viễn vọng phát minh vào thế kỉ 17. - Pencil was invented in 18th century.
Bút chì phát minh vào thế kỉ 18. - Train locomotive was invented in 19th century.
Đầu máy xe lửa phát minh vào thế kỉ 19. - Bicycle was invented in 19th century.
Xe đạp phát minh vào thế kỉ 19. - Monocar was invented in 19th century.
Ô tô phát minh vào thế kỉ 19. - Airplane was invented in 20th century.
Máy bay phát minh vào thế kỉ 20. - Electronic computer was invented in 20th century.
Máy tính điện tử phát minh vào thế kỉ 20. - Artifical satellite was invented in 20th century.
Vệ tinh nhân tạo phát minh vào thế kỉ 20.
